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Failed to build mcpp project with glfw dependency #539

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Failed to build mcpp project with glfw dependency#539

Description

@SnowFoxqwq
SnowFoxqwq
opened on Oct 17, 2026

The problem i've met

I'm building my mcpp project with glfw library, and this is my mcpp.toml file content:

[package]
name        = "mcpp_tut"
version     = "0.1.0"
description = "A modular C++23 package"
license     = "Apache-2.0"

[dependencies.compat]
"glfw" = "3.4"

However, when i built my mcpp project, something wrong while building the project, and here is the log:

 mcpp build
   Resolving toolchain
    Resolved llvm@20.1.7 → @mcpp/registry/data/xpkgs/xim-x-llvm/20.1.7/bin/clang++.exe
    Resolved sysroot msvc@system → MSVC 14.50.35717 (system: Visual Studio Community 2026) · Windows SDK 10.0.26100.0
      Target x86_64-pc-windows-msvc
    Inferred sources [src/**/*.{cppm,cpp,cc,c,S,s,asm}]
    Inferred target mcpp_tut (bin from src/main.cpp)
   Compiling compat.khrplatform v2026.05.31
   Compiling compat.opengl v2026.05.31
   Compiling compat.glfw v3.4
   Compiling mcpp_tut v0.1.0 (.)
error: build failed in mcpp_tut v0.1.0 (.)
failed: bin/mcpp_tut.exe
C:/Users/28900/.mcpp/registry/data/xpkgs/xim-x-llvm/20.1.7/bin/clang++.exe @bin/mcpp_tut.exe.rsp -o bin/mcpp_tut.exe -fms-runtime-lib=dll -fuse-ld=lld -Xmicrosoft-visualc-tools-root "C:\Program Files\Microsoft Visual Studio\18\Community\VC\Tools\MSVC\14.50.35717" -Xmicrosoft-windows-sdk-root "C:\Program Files (x86)\Windows Kits\10" -Xmicrosoft-windows-sdk-version 10.0.26100.0 -fms-compatibility-version=19.50.35723 -lgdi32
lld-link: error: undefined symbol: __declspec(dllimport) LoadCursorW
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1290
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:232
>>>               obj/compat_glfw/src/win32_window.o:(updateCursorImage)
lld-link: error: undefined symbol: __declspec(dllimport) LoadImageW
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1297
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1303
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:2341
>>>               obj/compat_glfw/src/win32_window.o:(_glfwCreateStandardCursorWin32)
lld-link: error: undefined symbol: __declspec(dllimport) RegisterClassExW
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1308
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_init.c:381
>>>               obj/compat_glfw/src/win32_init.o:(createHelperWindow)
lld-link: error: undefined symbol: __declspec(dllimport) GetSystemMetrics
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1317
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1324
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1325
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced 11 more times
lld-link: error: undefined symbol: __declspec(dllimport) GetMonitorInfoW
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1348
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1470
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:431
>>>               obj/compat_glfw/src/win32_window.o:(fitToMonitor)
>>> referenced 5 more times
lld-link: error: undefined symbol: __declspec(dllimport) AdjustWindowRectEx
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1366
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1453
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1655
>>>               obj/compat_glfw/src/win32_window.o:(_glfwSetWindowPosWin32)
>>> referenced 8 more times
lld-link: error: undefined symbol: __declspec(dllimport) CreateWindowExW
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1387
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_init.c:389
>>>               obj/compat_glfw/src/win32_init.o:(createHelperWindow)
lld-link: error: undefined symbol: __declspec(dllimport) SetPropW
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1407
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
lld-link: error: undefined symbol: __declspec(dllimport) MonitorFromWindow
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1427
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1779
>>>               obj/compat_glfw/src/win32_window.o:(_glfwGetWindowContentScaleWin32)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:489
>>>               obj/compat_glfw/src/win32_window.o:(maximizeWindowManually)
>>> referenced 1 more times
lld-link: error: undefined symbol: __declspec(dllimport) GetWindowPlacement
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1455
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
lld-link: error: undefined symbol: __declspec(dllimport) OffsetRect
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1456
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:512
>>>               obj/compat_glfw/src/win32_window.o:(maximizeWindowManually)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:517
>>>               obj/compat_glfw/src/win32_window.o:(maximizeWindowManually)
lld-link: error: undefined symbol: __declspec(dllimport) SetWindowPlacement
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1462
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
lld-link: error: undefined symbol: __declspec(dllimport) SetWindowPos
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1472
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:432
>>>               obj/compat_glfw/src/win32_window.o:(fitToMonitor)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1659
>>>               obj/compat_glfw/src/win32_window.o:(_glfwSetWindowPosWin32)
>>> referenced 8 more times
lld-link: error: undefined symbol: __declspec(dllimport) DragAcceptFiles
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1481
>>>               obj/compat_glfw/src/win32_window.o:(createNativeWindow)
lld-link: error: undefined symbol: __declspec(dllimport) GetWindowLongW
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:2024
>>>               obj/compat_glfw/src/win32_window.o:(_glfwSetWindowMousePassthroughWin32)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:500
>>>               obj/compat_glfw/src/win32_window.o:(maximizeWindowManually)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:506
>>>               obj/compat_glfw/src/win32_window.o:(maximizeWindowManually)
>>> referenced 5 more times
lld-link: error: undefined symbol: __declspec(dllimport) GetLayeredWindowAttributes
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:2027
>>>               obj/compat_glfw/src/win32_window.o:(_glfwSetWindowMousePassthroughWin32)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:2054
>>>               obj/compat_glfw/src/win32_window.o:(_glfwGetWindowOpacityWin32)
lld-link: error: undefined symbol: __declspec(dllimport) SetWindowLongW
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:2043
>>>               obj/compat_glfw/src/win32_window.o:(_glfwSetWindowMousePassthroughWin32)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:502
>>>               obj/compat_glfw/src/win32_window.o:(maximizeWindowManually)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1896
>>>               obj/compat_glfw/src/win32_window.o:(_glfwSetWindowMonitorWin32)
>>> referenced 4 more times
lld-link: error: undefined symbol: __declspec(dllimport) SetLayeredWindowAttributes
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:2046
>>>               obj/compat_glfw/src/win32_window.o:(_glfwSetWindowMousePassthroughWin32)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:2072
>>>               obj/compat_glfw/src/win32_window.o:(_glfwSetWindowOpacityWin32)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:2076
>>>               obj/compat_glfw/src/win32_window.o:(_glfwSetWindowOpacityWin32)
lld-link: error: undefined symbol: __declspec(dllimport) ShowWindow
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1820
>>>               obj/compat_glfw/src/win32_window.o:(_glfwShowWindowWin32)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1786
>>>               obj/compat_glfw/src/win32_window.o:(_glfwIconifyWindowWin32)
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1791
>>>               obj/compat_glfw/src/win32_window.o:(_glfwRestoreWindowWin32)
>>> referenced 3 more times
lld-link: error: undefined symbol: __declspec(dllimport) BringWindowToTop
>>> referenced by C:\Users\28900\.mcpp\xpkgs\compat-x-glfw\3.4\src\win32_window.c:1835
>>>               obj/compat_glfw/src/win32_window.o:(_glfwFocusWindowWin32)
lld-link: error: too many errors emitted, stopping now (use /errorlimit:0 to see all errors)
clang++: error: linker command failed with exit code 1 (use -v to see invocation)

It seems that the compiler forgot to link some basic libraries like user32, "shell32" etc.

The solution

i added some command to link the libraries, and the final cpp.toml is like that:

[package]
name        = "mcpp_tut"
version     = "0.1.0"
description = "A modular C++23 package"
license     = "Apache-2.0"

[dependencies.compat]
"glfw" = "3.4"

[build]
ldflags = ["-luser32", "-lshell32", "-ldwmapi", "-lopengl32", "-lgdi32"]

i am not sure that whether the libraries above are the minimum requirement to build glfw.

Hope mcpp-index can fix this issue and link the libraries automatically while building glfw library.

Activity

  1. Sunrisepeak commented on Oct 17, 2026

    @Sunrisepeak
    Sunrisepeak
    on Oct 17, 2026
    Member

    glfw 可以了 已经自带 ldflags

  2. SnowFoxqwq
    closed this as completedon Oct 18, 2026
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